"The commons is a general term referring to the cultural and natural resources accessible to all members of a society, including natural materials such as air, water, and a habitable earth. These resources are held in common, not owned privately..."

Elinor "Lin" Ostrom (born Elinor Claire Awan; August 7, 1933 – June 12, 2012) was an American political economist whose work was associated with the New Institutional Economics and the resurgence of political economy. In 2009, she shared the Nobel Memorial Prize in Economic Sciences with Oliver E. Williamson for "her analysis of economic governance, especially the commons". To date, she remains the only woman to win The Prize in Economics.
...She was a lead researcher for the Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program (SANREM CRSP)..."

"The governance of natural resources used by many individuals in common is an issue of increasing concern to policy analysts. Both state control and privatisation of resources have been advocated, but neither the state nor the market have been uniformly successful in solving common pool resource problems. Offering a critique of the foundations of policy analysis as applied to natural resources, Elinor Ostrom here provides a unique body of empirical data to explore conditions under which common pool resource problems have been satisfactorily or unsatisfactorily solved. Dr Ostrom first describes three models most frequently used as the foundation for recommending state or market solutions. She then outlines theoretical and empirical alternatives to these models in order to illustrate the diversity of possible solutions. In the following chapters she uses institutional analysis to examine different ways - both successful and unsuccessful - of governing the commons. In contrast to the proposition of the tragedy of the commons argument, common pool problems sometimes are solved by voluntary organisations rather than by a coercive state. Among the cases considered are communal tenure in meadows and forests, irrigation communities and other water rights, and fisheries."